This learning object provides simple animations that illustrate the nature of paper, water and the structure of the atom. There is a self test and also ideas for further research. These are accompanied by a timeline of discoveries about the atom, and a pdf document ‘Nanotechnology’. The object requires Adobe Flash Player ...

Discover what happens to the nuclei of atoms during nuclear decay. Play simulations of different types of nuclear decay affecting atoms of different elements. Using the atomic numbers and mass numbers of the atoms, write hypotheses predicting the particles emitted and the daughter nuclei of the decay. Test your understanding ...

This web page contains a video, animations and a student worksheet investigating the redox reaction between copper metal and silver ions. The animations show important molecular-level segments from the video.

Have you heard of the Large Hadron Collider (LHC)? Watch this clip to find out about a scientific discovery at the LHC that left physicists uncharacteristically emotional. Catalyst's Dr Derek Muller takes you inside the LHC and talks to scientists there about the discovery of the Higgs boson and what it means for our understanding ...

Explore the different forms (allotropes) of the chemical element carbon. You will be surprised at how different the allotropes are.Meet key scientists, such as Harry Kroto, who have made amazing discoveries about new forms of carbon. Visualise how the atoms and outer electrons are arranged in different forms, so you can ...

Do you know how radios transmit sound, or how ultraviolet light travels through the air? Listen to Bernie Hobbs explain electromagnetic radiation and discover what radios, ultraviolet light, x-rays and nuclear blasts have in common. Find out about their energy levels, how they travel from place to place, and at what speed, ...

This ABC article or podcast by Dr Karl describes and outlines the role of the particle accelerator, the Large Hadron Collider and how it is helping to research the nature of mass. This article is dated (2008) as some significant results from the Large Hadron Collider have since been announced.

Experiment with some gas trapped in an air chamber. Notice how the gas is made of particles. Investigate the speed and collisions of the air particles. Discover what happens to them as you change the temperature. Observe how this affects the properties of the gas. For example, measure the change in pressure as you heat ...

Experiment with gas trapped in an air chamber. Change the size of the chamber, add or remove gas and notice how the gas pressure changes. For example, double the pressure by halving the volume. Control the pressure by balancing the volume of the chamber with the number of gas particles it contains. This learning object ...

Experiment with gas trapped in an air chamber. Change the size of the chamber, the temperature, or add or remove gas. Notice how the gas pressure changes. For example, increase the pressure by heating the gas. Make and test predictions about gas behaviour. This learning object is one in a series of four objects.

Experiment with gas trapped in an air chamber. Observe and make predictions about the effects of changing the chamber volume, or the number of gas particles, on some common objects placed inside. For example, control the size of a balloon by changing the size of the chamber. This learning object is one in a series of four objects.

Explore how physical changes of state can be brought about by supplying heat energy to, or removing heat energy from, different substances. For example, select a substance such as iodine crystals or ice cubes and observe what happens when heat energy is added. Then remove heat energy to see how the process is reversed. ...

Experiment with phase transformations of water. Heat a block of ice and a beaker of liquid water. Predict changes to the molecular structure and molecular motion. Look closely at movement of the water molecules, especially at the surface. Explore relationships between temperature, molecular speed and states of matter. This ...

Experiment with phase transformations of water. Heat a block of ice to just below freezing point. Predict changes to the molecular structure and molecular motion. Look closely at movement of the water molecules, especially at the surface. Explain why the molecules remain tightly bonded. This learning object is one in a ...

Experiment with phase transformations of water. Heat a block of ice to ten degrees Celsius. Predict changes to the molecular structure and motion. Look closely at movement of the water molecules, especially at the surface. Explore relationships between temperature, molecular speed and states of matter. This learning object ...

Experiment with phase transformations of water. Heat a beaker of water to boiling point. Predict changes to the molecular structure and molecular motion. Look closely at movement of the water molecules, especially at the surface. Explore relationships between temperature, molecular speed and states of matter. This learning ...

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